scholarly journals SERENDIPITOUS DISCOVERY OF A MASSIVE cD GALAXY ATz= 1.096: IMPLICATIONS FOR THE EARLY FORMATION AND LATE EVOLUTION OF cD GALAXIES

2013 ◽  
Vol 769 (2) ◽  
pp. 147 ◽  
Author(s):  
F. S. Liu ◽  
Yicheng Guo ◽  
David C. Koo ◽  
Jonathan R. Trump ◽  
Guillermo Barro ◽  
...  
2012 ◽  
Vol 8 (S295) ◽  
pp. 313-313
Author(s):  
S. N. Kemp ◽  
Víctor Hugo Ramírez-Siordia ◽  
Ernesto Pérez-Hernández

cD galaxies are supergiant elliptical galaxies found generally in the central parts of rich clusters, which have an extended halo-like component (envelope) in addition to the underlying de Vaucouleurs-Sérsic elliptical galaxy-like component. This envelope can extend to radial distances of > 500 kpc (Oemler 1976, Schombert 1988). There have been many theories to explain the formation of these envelopes. These include tidal stripping, where material is stripped from neighbouring galaxies; mergers and fusions, where the envelope is built up hierarchically by successive mergers with large and small galaxies; primordial origin, where the envelope is formed at the same time as the rest of the elliptical galaxy (which appears to be related to theories of early formation of the largest galaxies); and cooling flows: in clusters with X-ray emission there is often a minimum temperature in the centre interpreted as a flow of cooling gas towards the centre of the cluster, where the gas can cool sufficiently, forming stars. The colours of the stars in the envelopes will be affected by their process of formation and subsequent evolution.


Author(s):  
Alison Forrestal

Chapter 4 investigates the foundation and early development of the Congregation of the Mission, a congregation of secular missionaries dedicated to evangelizing the rural poor (their mission) through the completion of formal missions in their parishes. Soon to be known as the Lazarists, the Congregation was endowed by patrons Philippe-Emmanuel and Marguerite de Gondi in 1625. The chapter explains how, in charting its course thereafter, de Paul was forced to confront pressing questions about the character, functioning, and durability of his new mission institute. It analyses his answers to these through a composite investigation of the three milestones of the Congregation’s early formation process: its initial foundation in 1625, the issuance of papal approval in 1633, and the controversial acquisition of the priory of Saint-Lazare in Paris in 1632.


2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Vyacheslav N. Baklagin

The paper shows the changes in the dates (complete freeze-up, ±5 days/°C and complete ice clearance, ±3 days/°C) of the ice regime in Lake Onego depending on changes in average air temperature within the preceding two-month periods (autumn and spring). The regression equations for their calculation based on previous three- and four-month periods according to the 2000-2018 data are also provided. Indicative dates of ice regime based on accumulated air temperatures within the ice period of Lake Onego were also established (early formation of ice phenomena, complete freeze-up phase, beginning of the break-up phase and complete ice clearance). Together with the data on expected air temperature above the lake’s surface, these dependencies enable us to predict the indicative dates of the ice regime.


Sign in / Sign up

Export Citation Format

Share Document